package net.minecraft.command;

import java.util.List;
import net.minecraft.block.state.IBlockState;
import net.minecraft.init.Blocks;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.BlockPos;
import net.minecraft.world.World;
import net.minecraft.world.gen.structure.StructureBoundingBox;

public class CommandCompare extends CommandBase {
	/**
	 * Gets the name of the command
	 */
	public String getCommandName() {
		return "testforblocks";
	}

	/**
	 * Return the required permission level for this command.
	 */
	public int getRequiredPermissionLevel() {
		return 2;
	}

	/**
	 * Gets the usage string for the command.
	 */
	public String getCommandUsage(ICommandSender sender) {
		return "commands.compare.usage";
	}

	/**
	 * Callback when the command is invoked
	 */
	public void processCommand(ICommandSender sender, String[] args) throws CommandException {
		if (args.length < 9) {
			throw new WrongUsageException("commands.compare.usage", new Object[0]);
		} else {
			sender.setCommandStat(CommandResultStats.Type.AFFECTED_BLOCKS, 0);
			BlockPos blockpos = parseBlockPos(sender, args, 0, false);
			BlockPos blockpos1 = parseBlockPos(sender, args, 3, false);
			BlockPos blockpos2 = parseBlockPos(sender, args, 6, false);
			StructureBoundingBox structureboundingbox = new StructureBoundingBox(blockpos, blockpos1);
			StructureBoundingBox structureboundingbox1 = new StructureBoundingBox(blockpos2,
					blockpos2.add(structureboundingbox.func_175896_b()));
			int i = structureboundingbox.getXSize() * structureboundingbox.getYSize() * structureboundingbox.getZSize();

			if (i > 524288) {
				throw new CommandException("commands.compare.tooManyBlocks",
						new Object[] { Integer.valueOf(i), Integer.valueOf(524288) });
			} else if (structureboundingbox.minY >= 0 && structureboundingbox.maxY < 256
					&& structureboundingbox1.minY >= 0 && structureboundingbox1.maxY < 256) {
				World world = sender.getEntityWorld();

				if (world.isAreaLoaded(structureboundingbox) && world.isAreaLoaded(structureboundingbox1)) {
					boolean flag = false;

					if (args.length > 9 && args[9].equals("masked")) {
						flag = true;
					}

					i = 0;
					BlockPos blockpos3 = new BlockPos(structureboundingbox1.minX - structureboundingbox.minX,
							structureboundingbox1.minY - structureboundingbox.minY,
							structureboundingbox1.minZ - structureboundingbox.minZ);
					BlockPos.MutableBlockPos blockpos$mutableblockpos = new BlockPos.MutableBlockPos();
					BlockPos.MutableBlockPos blockpos$mutableblockpos1 = new BlockPos.MutableBlockPos();

					for (int j = structureboundingbox.minZ; j <= structureboundingbox.maxZ; ++j) {
						for (int k = structureboundingbox.minY; k <= structureboundingbox.maxY; ++k) {
							for (int l = structureboundingbox.minX; l <= structureboundingbox.maxX; ++l) {
								blockpos$mutableblockpos.func_181079_c(l, k, j);
								blockpos$mutableblockpos1.func_181079_c(l + blockpos3.getX(), k + blockpos3.getY(),
										j + blockpos3.getZ());
								boolean flag1 = false;
								IBlockState iblockstate = world.getBlockState(blockpos$mutableblockpos);

								if (!flag || iblockstate.getBlock() != Blocks.air) {
									if (iblockstate == world.getBlockState(blockpos$mutableblockpos1)) {
										TileEntity tileentity = world.getTileEntity(blockpos$mutableblockpos);
										TileEntity tileentity1 = world.getTileEntity(blockpos$mutableblockpos1);

										if (tileentity != null && tileentity1 != null) {
											NBTTagCompound nbttagcompound = new NBTTagCompound();
											tileentity.writeToNBT(nbttagcompound);
											nbttagcompound.removeTag("x");
											nbttagcompound.removeTag("y");
											nbttagcompound.removeTag("z");
											NBTTagCompound nbttagcompound1 = new NBTTagCompound();
											tileentity1.writeToNBT(nbttagcompound1);
											nbttagcompound1.removeTag("x");
											nbttagcompound1.removeTag("y");
											nbttagcompound1.removeTag("z");

											if (!nbttagcompound.equals(nbttagcompound1)) {
												flag1 = true;
											}
										} else if (tileentity != null) {
											flag1 = true;
										}
									} else {
										flag1 = true;
									}

									++i;

									if (flag1) {
										throw new CommandException("commands.compare.failed", new Object[0]);
									}
								}
							}
						}
					}

					sender.setCommandStat(CommandResultStats.Type.AFFECTED_BLOCKS, i);
					notifyOperators(sender, this, "commands.compare.success", new Object[] { Integer.valueOf(i) });
				} else {
					throw new CommandException("commands.compare.outOfWorld", new Object[0]);
				}
			} else {
				throw new CommandException("commands.compare.outOfWorld", new Object[0]);
			}
		}
	}

	public List<String> addTabCompletionOptions(ICommandSender sender, String[] args, BlockPos pos) {
		return args.length > 0 && args.length <= 3 ? func_175771_a(args, 0, pos)
				: (args.length > 3 && args.length <= 6 ? func_175771_a(args, 3, pos)
						: (args.length > 6 && args.length <= 9 ? func_175771_a(args, 6, pos)
								: (args.length == 10
										? getListOfStringsMatchingLastWord(args, new String[] { "masked", "all" })
										: null)));
	}
}
